Structure-guided discovery of thiazolidine-2,4-dione derivatives as a novel class of Leishmania major pteridine reductase 1 inhibitors
作者:Franco Henrique A. Leite、Priscila Brandão Gomes da Silva Santiago、Thamires Quadros Froes、João da Silva Filho、Suellen Gonçalves da Silva、Rafael M. Ximenes、Antônio Rodolfo de Faria、Dalci José Brondani、Julianna F.C. de Albuquerque、Marcelo Santos Castilho
DOI:10.1016/j.ejmech.2016.07.060
日期:2016.11
scaffold have been reported. In order to design a novel class of PTR1 inhibitors, we employed the thiazolidinone ring as a bioisosteric replacement for pteridine/purine ring. Among seven novel thiazolidine-2,4-dione derivatives reported herein, 2d was identified as the most promising lead by thermal shift assays (ΔTm = 11 °C, p = 0,01). Kinetic assays reveal that 2d has IC50 = 44.67 ± 1.74 μM and shows a
自史前时代以来,主要的利什曼原虫和其他原生动物寄生虫一样,一直困扰着人类,但它仍然是一种全球性疾病,治疗性阿森纳仍然匮乏。虽然L.主要是蝶啶和嘌呤营养缺陷型的,是公认的叶酸生物合成抑制剂,例如甲氨蝶呤,对寄生虫的存活效果较差。效率缺乏与另一种生化途径有关,其中蝶啶还原酶1(PTR1)起主要作用。由于这个原因,该酶被认为是抗利什曼原虫药物开发的有希望的靶标,并且已经报道了几种共享底物支架的抑制剂。为了设计一类新型的PTR1抑制剂,我们使用了噻唑烷酮环作为蝶呤/嘌呤环的生物等位替代物。在本文报道的七个新颖的噻唑烷-2,4-二酮衍生物中,通过热位移分析(ΔTm= 11°C,p = 0.01),2d被确定为最有前途的铅。动力学分析表明2dIC50 = 44.67±1.74μM,表现出非竞争行为。该信息指导了对接研究和分子动力学模拟(50000 ps),支持2d假定的结合曲线(与Ser-111和Le